In earlier chapters, you learned how to do simple color correction, how RGB and indexed color differ, and how to change the foreground and background colors in the Toolbox. But a deeper understanding of GIMP's color model can illuminate all sorts of useful image-processing tricks.
In this chapter, I'll describe the way GIMP represents colors, different color models, and techniques to manipulate colors.
Understanding color requires a more theoretical approach than you've seen so far. A familiarity with color implementation in digital images is helpful to understanding the sorts of advanced tricks that can be played.
If you feel overwhelmed by the theory, you can skip those sections and use this chapter for reference when you have ...